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8. How do I calibrate a CGS500 to a Monicon controller?
Tools required:
A: Calibration tool, P/N: 010-001
B: 50% LEL combustible gas in cylinder with flow regulator
C: Flow adapter, P/N: C13055
1. Ensure that the system has been allowed to stabilise for 24 hours
2. Momentarily operate the CAL switch (The display will flash)
3. Ensure that the detector in clean air (i.e. no combustible gas present)
4. Check that the VALUE display reads 0
5. If the VALUE display does not read 0, adjust the ZERO potentiometer
6. Set flow rate to 300mL/minute on regulator and apply gas to sensor
7. Observe the reading on the VALUE display until the reading stabilises
8. Adjust the SPAN potentiometer until the VALUE display indicates 50
9. Remove the flow adapter from the sensor
10. Observe the reading on the VALUE display until the reading stabilises
11. Adjust the ZERO potentiometer until the VALUE display reads 0
12. Repeat steps 6 to 11 if necessary
13. Momentarily press the CAL switch to return to normal mode
14. Refer to the Instruction Manual for further calibration details
A simple calibration check may be performed by proceeding with steps 1, 2, 3, 4, 6, 7 and 10 to check that the system indicates the correct gas concentration within the prescribed tolerance levels
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